All of my workstations are now running Fedora Silverblue. Steam is installed via flatpak, and GPU is a Radeon 6800 XT. I also have a Steam Link for couch co-op. All is well on the gaming front!
Debian Sid and Arch have run equally well with this setup. Your choice of distro matters much less now compared to a few years ago, especially if you favour a flatpak workflow.
BitOneZero